Heat Pump ESCO Exam Test with Answers Rated A
An air-to-air heat pump has many of the same compo-
nents as an air conditioning system. The major ditterence Reversing valve
is that a heat pump also has an
What is the ditterence between "demand defrost" and Demand defrost happens only when needed and timed
"timed defrost"? defrost is based on time/temperature.
The thermostat that controls the auxiliary electric heat
Outdoor ambient thermostat
according to the outdoor temperature is called the;
The outdoor temperature at which the heat pump pro-
vides the same amount of heat as the heat loss of the
Initial balance point
conditioned space without an auxiliary heat is known as
the;
At what temperature is an outdoor ambient thermostat
Slightly above the initial balance point.
normally set?
The outdoor coil is frozen solid on a "no heat" service call.
The outdoor fan is inoperative.
The most likely reason is;
In order to determine a heat pumps' balance point, you
The building's heat load.
must first calculate;
When a heat pump is used for heating and cooling, the
Cooling load.
system is sized by the;
A high eflciency heat pump system designed to function
Two outdoor coils with each one incorporating a dual
from high to low ambient conditions below 10*F, may
stage compressor.
have?
Room thermostats for heat pumps should be installed; As near to the main return air grill as possible.
When the heat pump compressor has malfunctioned, the
Emergency heat mode.
customer has the option to switch the system into;
Start up with a night set back digital thermostat requires
Teach the customer how to program the thermostat.
the technician to always;
1/9
, Heat Pump ESCO Exam Test with Answers Rated A
The heat pump defrost board can be manipulated by the
Simulate the defrost cycle.
technician to;
The air-to-air heat pump outdoor unit is most eflcient if
In a moderate climate zone.
located;
Which of the following are innovations that may be found
ECM fan motors.
on new high eflciency units?
How may a lockout (impedance) relay be reset? Simply disconnect power to the unit momentarily.
The temperature ditterence between the 1st and 2nd
Approximately 2*F
bulbs for heating on a heat pump thermostat is;
Dividing the Btu's removed by the watts consumed during
SEER is calculated by;
the cooling season.
If the indoor fan is operated at an excessive speed in the The system will not properly remove the humidity from the
cooling mode; conditioned space.
The most preferred method of charging any system in the
By weight.
field is;
What is the industry standard for deep vacuum? Maintain 500 microns for 15 minutes.
Good service practice for installation of a reversing valve Use heat paste and wet rags while brazing in the new
includes; valve.
A small amount of current is passed through the start
Ott-cycle crankcase heat is provide by;
capacitor to start the heat winding.
You are checking for proper airflow in CFM on a three ton
heat pump system. The system has one return grill mea-
suring 24"X24", which has a net free area of 3.4 square Airflow in CFM is below normal range.
feet. You measure air velocity and calculate an average of
400 FPM. From this information you can conclude that;
What control operates the 1st stage of secondary heat? The second heating stage of the indoor thermostat.
A maximum of 10 minutes.
2/9
An air-to-air heat pump has many of the same compo-
nents as an air conditioning system. The major ditterence Reversing valve
is that a heat pump also has an
What is the ditterence between "demand defrost" and Demand defrost happens only when needed and timed
"timed defrost"? defrost is based on time/temperature.
The thermostat that controls the auxiliary electric heat
Outdoor ambient thermostat
according to the outdoor temperature is called the;
The outdoor temperature at which the heat pump pro-
vides the same amount of heat as the heat loss of the
Initial balance point
conditioned space without an auxiliary heat is known as
the;
At what temperature is an outdoor ambient thermostat
Slightly above the initial balance point.
normally set?
The outdoor coil is frozen solid on a "no heat" service call.
The outdoor fan is inoperative.
The most likely reason is;
In order to determine a heat pumps' balance point, you
The building's heat load.
must first calculate;
When a heat pump is used for heating and cooling, the
Cooling load.
system is sized by the;
A high eflciency heat pump system designed to function
Two outdoor coils with each one incorporating a dual
from high to low ambient conditions below 10*F, may
stage compressor.
have?
Room thermostats for heat pumps should be installed; As near to the main return air grill as possible.
When the heat pump compressor has malfunctioned, the
Emergency heat mode.
customer has the option to switch the system into;
Start up with a night set back digital thermostat requires
Teach the customer how to program the thermostat.
the technician to always;
1/9
, Heat Pump ESCO Exam Test with Answers Rated A
The heat pump defrost board can be manipulated by the
Simulate the defrost cycle.
technician to;
The air-to-air heat pump outdoor unit is most eflcient if
In a moderate climate zone.
located;
Which of the following are innovations that may be found
ECM fan motors.
on new high eflciency units?
How may a lockout (impedance) relay be reset? Simply disconnect power to the unit momentarily.
The temperature ditterence between the 1st and 2nd
Approximately 2*F
bulbs for heating on a heat pump thermostat is;
Dividing the Btu's removed by the watts consumed during
SEER is calculated by;
the cooling season.
If the indoor fan is operated at an excessive speed in the The system will not properly remove the humidity from the
cooling mode; conditioned space.
The most preferred method of charging any system in the
By weight.
field is;
What is the industry standard for deep vacuum? Maintain 500 microns for 15 minutes.
Good service practice for installation of a reversing valve Use heat paste and wet rags while brazing in the new
includes; valve.
A small amount of current is passed through the start
Ott-cycle crankcase heat is provide by;
capacitor to start the heat winding.
You are checking for proper airflow in CFM on a three ton
heat pump system. The system has one return grill mea-
suring 24"X24", which has a net free area of 3.4 square Airflow in CFM is below normal range.
feet. You measure air velocity and calculate an average of
400 FPM. From this information you can conclude that;
What control operates the 1st stage of secondary heat? The second heating stage of the indoor thermostat.
A maximum of 10 minutes.
2/9
